certification COSC

Why Are Some Watches COSC-Certified?

The word “chronometer” isn’t just a veneer Two lines on a dial are enough to make an enthusiast’s heart race: “Chronometer Officially Certified”. Behind that phrase lies more than a…

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Montre ressort de barillet

What Is the Lifespan of a Mainspring?

A Coiled Heart: Understanding the Mainspring In a mechanical watch, the mainspring is more than just a component. It’s the invisible muscle, curled inside a slim steel drum—the barrel—that releases…

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